*{
    margin: 0;
    padding: 0;
    background-repeat: no-repeat;
}
body{
    font-size: .22rem;
    line-height: 1.15;
    background-color: #fff;
    font-family: Helvetica Neue,Tahoma,Arial,PingFangSC-Regular,Hiragino Sans GB,Microsoft Yahei,sans-serif;
    color: #3c3c3c;
    -webkit-text-size-adjust: none;
    text-size-adjust: none;
}
img{
    outline: none;
    border: none;
}
a{
    text-decoration: none;
    color: inherit;
}
ul,li{
    list-style: none;
}
input{
    outline: none;
}
.clearfix::after{
    content:'';
    display:block;
    clear:both;
    visibility:hidden;
    height:0;
}
.clearfix{
    zoom:1;
}
.header-icon{
    display: block;
    width: 6rem;
    height: 6rem;
    line-height: 6rem;
    background-color: transparent;
    background-position: 50%;
}
.imgs-icon{
    display: inline-block;
    background-color: transparent;
    width: 4rem;
    height: 4rem;
    transition: transform .2s linear;
    background-position: 50%;
    background-size: cover;
}
/* 底部 */
footer{
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    transition: transform .2s ease-out;
    box-shadow: 0 3px 14px 2px rgba(0,0,0,.12);
    font-size: 2.2rem;
    text-align: center;
    z-index: 99;
}
footer .footer-nav{
    background-color: #fff;
    height: 10.2rem;
    min-height: 52px;
    display: flex;
    -webkit-box-align: center;
    align-items: center;
    font-size: 2.2rem;
    color: #999;
}
footer .footer-nav a{
    display: block;
    position: relative;
    -webkit-box-flex: 1;
    flex: 1 1 auto;
}
.footer-nav .imgs-icon{
    display: block;
    background-size: 4rem 4rem;
    margin: 0 auto 1rem;
}
.icon-home{
    background-image: url('baseimg/首页1.png');  
}
.icon-category{
    background-image: url('baseimg/分类1.png');
}
.icon-star{
    background-image: url('baseimg/星球1.png');
}
.icon-shopping{
    background-image: url('baseimg/购物车1.png');
}
.icon-we{
    background-image: url('baseimg/我的1.png');
    background-size: 4rem 4rem;
}
.footer-nav-active{
    color: #ff6700;
}
.footer-nav-active .icon-home{
    background-image: url('baseimg/首页2.png');
}
.footer-nav-active .icon-category{
    background-image: url('baseimg/分类2.png');
}
.footer-nav-active .icon-star{
    background-image: url('baseimg/星球2.png');
}
.footer-nav-active .icon-shopping{
    background-image: url('baseimg/购物车2.png');
}
.footer-nav-active .icon-we{
    background-image: url('baseimg/我的2.png');
}
.buttom-nav{
    width: 15rem;
}